Bryan behat

Add a simple feature with custom content type to behat_demo.
You already sourced this above, just without using your `$env_path` variable. Since the manifests are the things that use the env vars you print below, and by definition we always run them, you should print them all the time or not at all. The other thing is that the .env file is practically in INI format, so you could just do something like this:

```bash
while read l ; do
  echo sed 's/export *([^=]+)=(.*)$/\1 is \2/'
done<$env_path
```